Stove core structure of infrared gas stove

ABSTRACT

A stove core structure of an infrared gas stove is provided, including a bottom cover having a receiving groove, a bottom portion of the receiving groove having a gas through hole for guiding gas into the receiving groove, a guiding plate received in the receiving groove, being elevated, the bottom portion and the guiding plate having a space therebetween, a gap which is arranged around a circumferential side of the guiding plate and for the gas to pass therethrough serves as a main gas flow line. The gas flows through the circumferential and out from the infrared ceramic piece assembled on an opening of the receiving groove so that the gas contacts the air around the infrared ceramic piece fully and is combusted completely so as to prevent monoxide poisoning and waste of gas and to elevate a thermal efficiency.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a stove core structure of an infrared gas stove, and the stove core can be used on a portable gas stove, a household gas stove or a gas water heater.

Description of the Prior Art

A common infrared stove mainly includes an ignition device, a stove core and a gas-exhausting adjusting device, and fire is sent out through a plurality of fire holes on the stove core to heat food on a utensil; however, when there is wind, the fire may be easily put out, and when cooking the food, boiling water may spill out and put out the fire while the gas continues to be exhausted, if a user does not find that the fire has been put out and does not turn off the gas in time, there may be gas explosion. To prevent this kind of accident from happening, the infrared stove is further improved, a bottom cover, a gas-splitting member and a multi-hole stove board are disposed on the stove core, after the gas passes through the gas-splitting member, the multi-hole stove board ignites the gas to produce fire. Since the gas is exhausted through pores on the multi-hole stove board and is ignited to produce fire, the multi-hole stove board can prevent the problems like the fire being put out by wind or water.

In TWM387967, a gas stove head and a portable gas stove having the same is disclosed, and the gas stove head and the portable gas stove having the same is a stove core structure of a gas stove which has a gas-splitting member and a multi-hole stove board, mainly including a top cover; a multi-hole stove board, disposed above the top cover and having a plurality of through holes for gas to flow therethrough; a net member, disposed under the multi-hole stove board and having a plurality of meshes; a multi-hole gas-splitting member, disposed under the net member, the multi-hole gas-splitting member having the plurality of through holes for the gas to flow therethrough; a bottom cover, engaged with the top cover, the multi-hole stove board, the net member and the multi-hole gas-splitting member being sandwiched between the bottom cover and the top cover so that circumferential sides of the multi-hole stove board, the net member and the multi-hole gas-splitting member contact a wall of the bottom cover tightly so as to maintain an assembling stability and to prevent the multi-hole stove board, the net member and the multi-hole gas-splitting member from shaking in the bottom cover. When the gas stove head and the portable gas stove having the same is in use, the gas is exhausted through the through hole at a center of the bottom cover and split through holes on the multi-hole gas-splitting member and flows out through the meshes of the net member and the pores on the multi-hole stove board, and then the gas is ignited by the ignition device to produce fire so as to heat or cook the food on the utensil.

In TWM387967, a gas stove head and a portable gas stove having the same is disclosed, and in actual practice, the gas flows through pores of a multi-hole gas-splitting member and flows out from a net member and a multi-hole stove board, and the gas is gathered at a center of the gas stove head to produce fire. When a utensil is placed on the gas stove head, the utensil corresponds to and covers above the fire at the center so as to heat or cook food in the utensil. However, since the fire at the center of the gas stove head is completely covered by the utensil above, air contacting the fire is largely decreased, and there may be incomplete combustion. According to the national standard safely regulations, carbon monoxide released by the gas stove into the air needs to be lower than 1400 PPM so as to prevent the gas stove from releasing too much carbon monoxide into the air and to prevent the user from carbon monoxide poisoning. Therefore, if the gas stove releases less carbon monoxide when being used, it is safer for the user to use, problems like incomplete combustion and waste of gas may be prevented, and a thermal efficiency can be elevated.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.

SUMMARY OF THE INVENTION

The major object of the present invention is to provide a stove core structure of an infrared gas stove, which is designed to form a smooth flow line between a guiding plate and a bottom cover to guide gas to be exhausted upward from a circumferential side of the guiding plate.

To achieve the above and other objects, a stove core structure of an infrared gas stove is provided, including a bottom cover, the bottom cover having a receiving groove, a bottom portion of the receiving groove having a gas through hole for guiding gas from bottom to top and into the receiving groove, a guiding plate received in the receiving groove, an infrared ceramic piece being disposed above the bottom cover, the infrared ceramic piece being disposed above the guiding plate, the infrared ceramic piece and the guiding plate having a space therebetween. The guiding plate and the bottom portion of the receiving groove of the bottom cover have the space therebetween so that the gas through hole is non-covered, a gap which is arranged around a circumferential side of the guiding plate and for a great amount of the gas to pass therethrough serves as a main gas flow line, so after the gas passes through the gas through hole and enters the receiving groove, the gas passes through the space and flows upward through the gap around the circumferential side of the guiding plate.

An elevating portion is disposed between the guiding plate and the receiving groove of the bottom cover to form the space between the guiding plate and the bottom portion of the receiving groove of the bottom cover, and an outer diameter of the guiding plate is smaller than an inner diameter of the receiving groove to form the gap which is annular between an outer periphery of the guiding plate and an inner wall of the receiving groove.

The elevating portion is formed by at least two hollow tube bodies, the at least two hollow tube bodies are arranged equidistantly corresponding to each other and take a center of the bottom portion of the receiving groove as a circle center, a top end and a bottom end of each said hollow tube body respectively abut against a bottom face of the guiding plate and the bottom portion of the receiving groove, the bottom portion of the receiving groove at least has two first lock holes corresponding to the at least two hollow tube bodies, and each said first lock hole is for a fixing member (for example, a bolt) to be disposed therethrough from bottom to top, through a tube hole of the hollow tube body and a second lock hole which is preset on the guiding plate and be fixedly screwed with a nut.

The elevating portion is formed by at least two pillars which extend upward from the bottom portion of the receiving groove of the bottom cover, a top end of the pillar abuts against the bottom face of the guiding plate, and the guiding plate has at least two second lock holes corresponding to the at least two pillars for two said fixing members to be disposed therethrough from bottom to top and screwed into third lock holes of the pillars to be fixed therein.

The elevating portion is formed by at least two protrusive blocks which extend upward from the bottom portion of the receiving groove of the bottom cover, and an inner edge of a top end of the protrusive block has a recessed step dented for the outer periphery of the guiding plate to be stuck on the recessed step.

The elevating portion is formed by at least one elastic piece, the elastic piece is connected to the bottom face of the guiding plate, two sides of the elastic piece are bent downward to form two elastic props, and a wall of the receiving groove of the bottom cover has at least two restricting grooves corresponding to the two elastic props for the elastic props to be fixedly engaged therewith.

The elevating portion is formed by an elastic support which is formed through the circumferential side of the guiding plate being pressed downward, and a wall of the receiving groove of the bottom cover has a restricting groove corresponding to the elastic support for the elastic support to be fixedly engaged therewith.

The elevating portion is at least an elastic member, a top end of the elastic member is assembled on the bottom face of the guiding plate, and a bottom end of the elastic member abuts against the bottom portion of the receiving groove of the bottom cover.

The guiding plate has a plurality of pores which are for the gas to pass therethrough.

An outer diameter of the guiding plate is close to a greatest inner diameter of the receiving groove, the circumferential side of the guiding plate is engaged with the wall of the receiving groove of the bottom cover, an outer ring area of the guiding plate has a plurality of slots for the gas to flow therethrough, the slots are distributed equidistantly to form the gap around the circumferential side of the guiding plate to serve as the main gas flow line.

The stove core structure of the infrared gas stove uses the space which is between the guiding plate and the bottom portion of the receiving groove of the bottom cover and the gap which is arranged around the circumferential side of the guiding plate to form the smooth gas flow line to guide the gas to flow out from the circumferential side of the guiding plate and be exhausted upward through the infrared ceramic piece which is assembled on an opening of the receiving groove of the bottom cover so that the gas can contact with air surrounding the infrared ceramic piece and reach complete combustion. Therefore, problems like carbon monoxide poisoning, incomplete combustion or waste of gas can be prevented, and a thermal efficiency can be largely elevated.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a breakdown stereogram of a first embodiment of a stove core of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 of the stove core of the present invention;

FIG. 3 a stereogram of the present invention used on a gas stove;

FIG. 4 is a cross-sectional view of a second embodiment of the stove core of the present invention;

FIG. 5 is a cross-sectional view of a third embodiment of the stove core of the present invention;

FIG. 6 is a cross-sectional view of a fourth embodiment of the stove core of the present invention;

FIG. 7 is a cross-sectional view of a fifth embodiment of the stove core of the present invention;

FIG. 8 is a cross-sectional view of a sixth embodiment of the stove core of the present invention;

FIG. 9 is a cross-sectional view of a seventh embodiment of the stove core of the present invention;

FIG. 10 is a cross-sectional view of an eighth embodiment of the stove core of the present invention;

FIG. 11 is a breakdown stereogram of a guiding plate and a bottom cover of FIG. 10;

FIG. 12 is a cross-sectional view of a ninth embodiment of the stove core of the present invention; and

FIG. 13 is a breakdown stereogram of the guiding plate and the bottom cover of FIG. 12.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.

Please refer to FIGS. 1 and 2 for a first embodiment of a stove core structure of an infrared gas stove. The stove core structure of the infrared gas stove includes a bottom cover 1, the bottom cover 1 has a receiving groove 11, a center of a bottom portion of the receiving groove has a gas through hole 12, the receiving groove 11 of the bottom cover 1 has a guiding plate 2, an infrared ceramic piece 3 is disposed above the guiding plate 2, the infrared ceramic piece 3 is assembled on an opening of the receiving groove 11 of the bottom cover 1, and the infrared ceramic piece 3 has a plurality of holes for gas to flow therethrough. In addition, the infrared ceramic piece 3 is fixed on the opening the bottom cover 1 via an annular top cover 4, and the annular top cover 4 has a hollow-out hole 41 for the infrared ceramic piece 3 to be exposed.

The guiding plate 2 is elevated in the receiving groove 11, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween so that the gas through hole 12 is non-covered; and a gap 7 which is arranged around the circumferential side of the guiding plate 2 and for the gas to pass therethrough as a main gas flow line, so after the gas passes through the gas through hole 12 and enters the receiving groove 11, the gas passes through the space 6 and flows upward through the gap 7 around the circumferential side of the guiding plate 2. An elevating portion 5 is disposed between the guiding plate 2 and the receiving groove 11 of the bottom cover 1, and an outer diameter of the guiding plate 2 is smaller than an inner diameter of the receiving groove 11 to form the gap 7 which is annular between an outer periphery of the guiding plate 2 and an inner wall of the receiving groove 11.

The elevating portion 5 is formed by at least two hollow tube bodies 51, the at least two hollow tube bodies 51 are arranged equidistantly corresponding to each other and take the center of the bottom portion of the receiving groove 11 as a circle center, a top end and a bottom end of each said hollow tube body 51 respectively abut against a bottom face of the guiding plate 2 and the bottom portion of the receiving groove 11, the bottom portion of the receiving groove 11 at least has two first lock holes 13 corresponding to the at least two hollow tube bodies 51, and each said first lock hole 13 is for a fixing member 52 to be disposed therethrough from bottom to top, through a tube hole 511 of the hollow tube body 51 and a second lock hole 21 which is preset on the guiding plate 2 and be fixedly screwed with a nut 53 so that a distal end 521 of the fixing member 52 is exposed outside of a bottom face of the bottom cover 1. Therefore, the bottom cover 1, the guiding plate 2 and the elevating portion 5 can be fixedly assembled, and the guiding plate 2 and the infrared ceramic piece 3 have a space therebetween.

Please refer to FIG. 3 for the stove core structure of the present invention being adapted to a portable gas stove. Firstly, when a user turns on a gas-exhausting adjusting device 8 of the infrared gas stove, and the gas received in a storage groove (not shown) in the stove flows through the gas through hole 12 of the bottom cover 1 and into the receiving groove 11. Since the elevating portion 5 is disposed between the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 to prop the guiding plate 2 to produce the space 6, and the outer periphery of the guiding plate 2 and the inner wall of the receiving groove 11 have the gap 7 which is annular therebetween, so the gas in the bottom cover 1 can pass through the gas through hole 12, into the receiving groove 11, the space 6, the gap 7, flows upward through the circumferential side of the guiding plate 2 to a circumferential side of the infrared ceramic piece 3, and is exhausted through the tiny holes on the circumferential side of the infrared ceramic piece 3. After an ignition device is ignited, the gas starts to burn to produce fire to heat or cook a food on a utensil placed on the infrared ceramic piece 3. Second, as disclosed in FIG. 2, fire appearing from a periphery of the infrared ceramic piece 3 is greater than fire appearing from a center thereof because an amount of the gas exhausted from the periphery of the infrared ceramic piece 3 is greater than an amount of the gas exhausted from the center thereof.

Since the circumferential side of the infrared ceramic piece 3 is non-covered by the utensil, so the gas can contact air completely and fully combusted so that the gas exhausted from the periphery of the infrared ceramic piece 3 can be fully combusted and the thermal efficiency is largely elevated. The present invention has been tested by “Taiwan Gas Appliance Research and Development Center” with the CNS14529 standard, and the result found that monoxide released into the air by the present invention is 0.0084% which is lower than an emission standard 1,400 PPM. Therefore, the stove core release a small amount of monoxide into the air when in use, and the gas is fully combusted, so it is safer and economical for the user to use.

The elevating portion 5 may be verified in various applications, and followings are descriptions of a relation between the elevation portion 5 and the space 6.

Please refer to FIG. 4 for a second embodiment of the stove core of the present invention. The elevating portion 5 is formed by at least two pillars 54 which extend upward from the bottom portion of the receiving groove 11 of the bottom cover 1, the pillar 54 has a third lock hole 541, a top end of the pillar 54 abuts against a bottom face of the guiding plate 2, and the guiding plate 2 has at least two second lock holes 21 corresponding to the at least two pillars 54 for two fixing members 52 to be disposed therethrough from bottom to top and screwed into the third lock holes 541 of the pillars 54 to be fixed therein so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 5 for a third embodiment of the stove core of the present invention. The elevating portion 5 is formed by at least two pillars 54 which extend upward from the bottom portion of the receiving groove 11 of the bottom cover 1, the top end of the pillar 54 is connected to the guiding plate 2 so as to make the bottom cover 1, the pillar 54 and the guiding plate 2 integrally formed so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 6 for a fourth embodiment of the stove core of the present invention. The elevating portion 5 is formed by at least two protrusive blocks 55 which extend upward from the bottom portion of the receiving groove 11 of the bottom cover 1, and an inner edge of a top end of the protrusive block 55 has a recessed step 551 dented for the outer periphery of the guiding plate 2 to be stuck on the recessed step 551 so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 7 for a fifth embodiment of the stove core of the present invention. The elevating portion 5 is formed by at least one elastic piece 56, the elastic piece 56 is lockably connected to the bottom face of the guiding plate 2, two sides of the elastic piece 56 are bent downward to form two elastic props 561, and a wall of the receiving groove 11 of the bottom cover 1 has at least two restricting grooves 57 corresponding to the two elastic props 561 for the elastic props 561 to be fixedly engaged therewith so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 8 for a sixth embodiment of the stove core of the present invention. The elevating portion 5 is formed by an elastic support 22 which is formed through the circumferential side of the guiding plate being pressed downward, the wall of the receiving groove 11 of the bottom cover 1 has a restricting groove 57 corresponding to the elastic support 22 for the elastic support 22 to be fixedly engaged therewith so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 9 for a seventh embodiment of the stove core of the present invention. The elevating portion 5 is at least an elastic member 58, a top end of the elastic member 58 is assembled on the bottom face of the guiding plate 2, and a bottom end of the elastic member 58 abuts against the bottom portion of the receiving groove 11 of the bottom cover 1 so that the guiding plate 2 can be elevated, and the guiding plate 2 and the bottom portion of the receiving groove 11 of the bottom cover 1 have the space 6 therebetween.

Please refer to FIG. 10 for an eighth embodiment of the stove core of the present invention. The guiding plate 2 has a plurality of pores 25. Please further refer to FIG. 11, when the gas flows through the gas through hole 12 and enters into the receiving groove 11, the gap 7 of the guiding plate 2 serves as the main gas flow line, and the plurality of pores serve as a flow line for a small amount of gas. Hence, Greater fire gathers on the circumferential side of the infrared ceramic piece 3, and smaller fire are distributed at a center of the infrared ceramic piece 3.

Please refer to FIG. 12 for a ninth embodiment of the stove core of the present invention. An outer diameter of the guiding plate 2 is close to a greatest inner diameter of the receiving groove 11, and the circumferential side of the guiding plate 2 is engaged with a wall of the receiving groove 11 of the bottom cover 1. Please further refer to FIG. 13, an outer ring area of the guiding plate 2 has a plurality of slots 24 for the gas to flow therethrough, the slots 24 are distributed equidistantly, and after the gas flows through the gas through hole 12 and enters into the receiving groove 11, the slots 24 are the gaps 7 arranged around the outer ring area of the guiding plate 2 to serve as the main gas flow line.

While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

What is claimed is:
 1. A stove core structure of an infrared gas stove, including: a bottom cover, the bottom cover having a receiving groove, a bottom portion of the receiving groove having a gas through hole for guiding gas from bottom to top and into the receiving groove, a guiding plate received in the receiving groove, an infrared ceramic piece being disposed above the bottom cover, the infrared ceramic piece being disposed above the guiding plate, the infrared ceramic piece and the guiding plate having a space therebetween; wherein the guiding plate is elevated, and the guiding plate and the bottom portion of the receiving groove of the bottom cover have the space therebetween so that the gas through hole is non-covered; and a gap which is arranged around a circumferential side of the guiding plate and for the gas to pass therethrough serves as a main gas flow line, so after the gas passes through the gas through hole and enters the receiving groove, the gas passes through the space and flows upward through the gap around the circumferential side of the guiding plate.
 2. The stove core structure of the infrared gas stove of claim 1, wherein an elevating portion is disposed between the guiding plate and the receiving groove of the bottom cover to form the space between the guiding plate and the bottom portion of the receiving groove of the bottom cover, and an outer diameter of the guiding plate is smaller than an inner diameter of the receiving groove to form the gap which is annular between an outer periphery of the guiding plate and an inner wall of the receiving groove.
 3. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is formed by at least two hollow tube bodies, the at least two hollow tube bodies are arranged equidistantly corresponding to each other and take a center of the bottom portion of the receiving groove as a circle center, a top end and a bottom end of each said hollow tube body abut against a bottom face of the guiding plate and the bottom portion of the receiving groove, the bottom portion of the receiving groove at least has two first lock holes corresponding to the at least two hollow tube bodies, and each said first lock hole is for a fixing member to be disposed therethrough from bottom to top, through a tube hole of the hollow tube body and a second lock hole which is preset on the guiding plate and be fixedly screwed with a nut.
 4. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is formed by at least two pillars which extend upward from the bottom portion of the receiving groove of the bottom cover, a top end of the pillar abuts against a bottom face of the guiding plate, and the guiding plate has at least two second lock holes corresponding to the at least two pillars for two fixing members to be disposed therethrough from bottom to top and screwed into third lock holes of the pillars to be fixed therein.
 5. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is formed by at least two protrusive blocks which extend upward from the bottom portion of the receiving groove of the bottom cover, and an inner edge of a top end of the protrusive block has a recessed step dented for the outer periphery of the guiding plate to be stuck on the recessed step.
 6. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is formed by at least one elastic piece, the elastic piece is connected to a bottom face of the guiding plate, two sides of the elastic piece are bent downward to form two elastic props, and a wall of the receiving groove of the bottom cover has at least two restricting grooves corresponding to the two elastic props for the elastic props to be fixedly engaged therewith.
 7. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is formed by an elastic support which is formed through the circumferential side of the guiding plate being pressed downward, and a wall of the receiving groove of the bottom cover has a restricting groove corresponding to the elastic support for the elastic support to be fixedly engaged therewith.
 8. The stove core structure of the infrared gas stove of claim 2, wherein the elevating portion is at least an elastic member, a top end of the elastic member is assembled on a bottom face of the guiding plate, and a bottom end of the elastic member abuts against the bottom portion of the receiving groove of the bottom cover.
 9. The stove core structure of the infrared gas stove of claim 1, wherein the guiding plate has a plurality of pores which are for the gas to pass therethrough.
 10. The stove core structure of the infrared gas stove of claim 1, wherein an outer diameter of the guiding plate is close to a greatest inner diameter of the receiving groove, the circumferential side of the guiding plate is engaged with a wall of the receiving groove of the bottom cover, an outer ring area of the guiding plate has a plurality of slots for the gas to flow therethrough, the slots are distributed equidistantly to form the gap around the circumferential side of the guiding plate to serve as the main gas flow line. 